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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2014 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: CoreIndex2.html 743 2015-01-28 21:39:47Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.jsimpledb.core;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import java.util.NavigableMap;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import java.util.NavigableSet;<a name="line.11"></a>
<span class="sourceLineNo">012</span><a name="line.12"></a>
<span class="sourceLineNo">013</span>import org.jsimpledb.index.Index;<a name="line.13"></a>
<span class="sourceLineNo">014</span>import org.jsimpledb.index.Index2;<a name="line.14"></a>
<span class="sourceLineNo">015</span>import org.jsimpledb.kv.KeyFilter;<a name="line.15"></a>
<span class="sourceLineNo">016</span>import org.jsimpledb.tuple.Tuple2;<a name="line.16"></a>
<span class="sourceLineNo">017</span>import org.jsimpledb.tuple.Tuple3;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>/**<a name="line.19"></a>
<span class="sourceLineNo">020</span> * Core API {@link Index} implementation representing a composite index on two fields.<a name="line.20"></a>
<span class="sourceLineNo">021</span> *<a name="line.21"></a>
<span class="sourceLineNo">022</span> * &lt;p&gt;<a name="line.22"></a>
<span class="sourceLineNo">023</span> * Instances are immutable.<a name="line.23"></a>
<span class="sourceLineNo">024</span> * &lt;/p&gt;<a name="line.24"></a>
<span class="sourceLineNo">025</span> *<a name="line.25"></a>
<span class="sourceLineNo">026</span> * @param &lt;V1&gt; first index value type<a name="line.26"></a>
<span class="sourceLineNo">027</span> * @param &lt;V2&gt; second index value type<a name="line.27"></a>
<span class="sourceLineNo">028</span> * @param &lt;T&gt; index target type<a name="line.28"></a>
<span class="sourceLineNo">029</span> */<a name="line.29"></a>
<span class="sourceLineNo">030</span>public class CoreIndex2&lt;V1, V2, T&gt; extends AbstractCoreIndex implements Index2&lt;V1, V2, T&gt; {<a name="line.30"></a>
<span class="sourceLineNo">031</span><a name="line.31"></a>
<span class="sourceLineNo">032</span>// Constructors<a name="line.32"></a>
<span class="sourceLineNo">033</span><a name="line.33"></a>
<span class="sourceLineNo">034</span>    CoreIndex2(Transaction tx, Index2View&lt;V1, V2, T&gt; indexView) {<a name="line.34"></a>
<span class="sourceLineNo">035</span>        super(tx, 3, indexView);<a name="line.35"></a>
<span class="sourceLineNo">036</span>    }<a name="line.36"></a>
<span class="sourceLineNo">037</span><a name="line.37"></a>
<span class="sourceLineNo">038</span>// Methods<a name="line.38"></a>
<span class="sourceLineNo">039</span><a name="line.39"></a>
<span class="sourceLineNo">040</span>    @Override<a name="line.40"></a>
<span class="sourceLineNo">041</span>    public CoreIndex2&lt;V1, V2, T&gt; filter(int index, KeyFilter filter) {<a name="line.41"></a>
<span class="sourceLineNo">042</span>        return new CoreIndex2&lt;V1, V2, T&gt;(this.tx, this.getIndex2View().filter(index, filter));<a name="line.42"></a>
<span class="sourceLineNo">043</span>    }<a name="line.43"></a>
<span class="sourceLineNo">044</span><a name="line.44"></a>
<span class="sourceLineNo">045</span>    @SuppressWarnings("unchecked")<a name="line.45"></a>
<span class="sourceLineNo">046</span>    Index2View&lt;V1, V2, T&gt; getIndex2View() {<a name="line.46"></a>
<span class="sourceLineNo">047</span>        return (Index2View&lt;V1, V2, T&gt;)this.indexView;<a name="line.47"></a>
<span class="sourceLineNo">048</span>    }<a name="line.48"></a>
<span class="sourceLineNo">049</span><a name="line.49"></a>
<span class="sourceLineNo">050</span>// Index2<a name="line.50"></a>
<span class="sourceLineNo">051</span><a name="line.51"></a>
<span class="sourceLineNo">052</span>    @Override<a name="line.52"></a>
<span class="sourceLineNo">053</span>    public NavigableSet&lt;Tuple3&lt;V1, V2, T&gt;&gt; asSet() {<a name="line.53"></a>
<span class="sourceLineNo">054</span><a name="line.54"></a>
<span class="sourceLineNo">055</span>        // Get index view<a name="line.55"></a>
<span class="sourceLineNo">056</span>        final Index2View&lt;V1, V2, T&gt; iv = this.getIndex2View();<a name="line.56"></a>
<span class="sourceLineNo">057</span><a name="line.57"></a>
<span class="sourceLineNo">058</span>        // Create field type for Tuple3&lt;V1, V2, T&gt;<a name="line.58"></a>
<span class="sourceLineNo">059</span>        final Tuple3FieldType&lt;V1, V2, T&gt; fieldType = new Tuple3FieldType&lt;V1, V2, T&gt;(<a name="line.59"></a>
<span class="sourceLineNo">060</span>          iv.getValue1Type(), iv.getValue2Type(), iv.getTargetType());<a name="line.60"></a>
<span class="sourceLineNo">061</span><a name="line.61"></a>
<span class="sourceLineNo">062</span>        // Build set and apply filtering<a name="line.62"></a>
<span class="sourceLineNo">063</span>        IndexSet&lt;Tuple3&lt;V1, V2, T&gt;&gt; indexSet = new IndexSet&lt;Tuple3&lt;V1, V2, T&gt;&gt;(this.tx, fieldType, iv.prefixMode, iv.prefix);<a name="line.63"></a>
<span class="sourceLineNo">064</span>        if (iv.hasFilters())<a name="line.64"></a>
<span class="sourceLineNo">065</span>            indexSet = indexSet.filterKeys(new IndexKeyFilter(this.tx, iv, 3));<a name="line.65"></a>
<span class="sourceLineNo">066</span><a name="line.66"></a>
<span class="sourceLineNo">067</span>        // Done<a name="line.67"></a>
<span class="sourceLineNo">068</span>        return indexSet;<a name="line.68"></a>
<span class="sourceLineNo">069</span>    }<a name="line.69"></a>
<span class="sourceLineNo">070</span><a name="line.70"></a>
<span class="sourceLineNo">071</span>    @Override<a name="line.71"></a>
<span class="sourceLineNo">072</span>    public NavigableMap&lt;Tuple2&lt;V1, V2&gt;, NavigableSet&lt;T&gt;&gt; asMap() {<a name="line.72"></a>
<span class="sourceLineNo">073</span><a name="line.73"></a>
<span class="sourceLineNo">074</span>        // Get index view<a name="line.74"></a>
<span class="sourceLineNo">075</span>        final Index2View&lt;V1, V2, T&gt; iv = this.getIndex2View();<a name="line.75"></a>
<span class="sourceLineNo">076</span><a name="line.76"></a>
<span class="sourceLineNo">077</span>        // Create new IndexView<a name="line.77"></a>
<span class="sourceLineNo">078</span>        final IndexView&lt;Tuple2&lt;V1, V2&gt;, T&gt; tupleIV = iv.asTuple2IndexView();<a name="line.78"></a>
<span class="sourceLineNo">079</span><a name="line.79"></a>
<span class="sourceLineNo">080</span>        // Build map and apply filtering<a name="line.80"></a>
<span class="sourceLineNo">081</span>        IndexMap&lt;Tuple2&lt;V1, V2&gt;, NavigableSet&lt;T&gt;&gt; indexMap = new IndexMap.OfValues&lt;Tuple2&lt;V1, V2&gt;, T&gt;(this.tx, tupleIV);<a name="line.81"></a>
<span class="sourceLineNo">082</span>        if (tupleIV.hasFilters())<a name="line.82"></a>
<span class="sourceLineNo">083</span>            indexMap = indexMap.filterKeys(new IndexKeyFilter(this.tx, tupleIV, 1));<a name="line.83"></a>
<span class="sourceLineNo">084</span><a name="line.84"></a>
<span class="sourceLineNo">085</span>        // Done<a name="line.85"></a>
<span class="sourceLineNo">086</span>        return indexMap;<a name="line.86"></a>
<span class="sourceLineNo">087</span>    }<a name="line.87"></a>
<span class="sourceLineNo">088</span><a name="line.88"></a>
<span class="sourceLineNo">089</span>    @Override<a name="line.89"></a>
<span class="sourceLineNo">090</span>    public NavigableMap&lt;V1, Index&lt;V2, T&gt;&gt; asMapOfIndex() {<a name="line.90"></a>
<span class="sourceLineNo">091</span><a name="line.91"></a>
<span class="sourceLineNo">092</span>        // Get index view<a name="line.92"></a>
<span class="sourceLineNo">093</span>        final Index2View&lt;V1, V2, T&gt; iv = this.getIndex2View();<a name="line.93"></a>
<span class="sourceLineNo">094</span><a name="line.94"></a>
<span class="sourceLineNo">095</span>        // Build map and apply filtering<a name="line.95"></a>
<span class="sourceLineNo">096</span>        IndexMap&lt;V1, Index&lt;V2, T&gt;&gt; indexMap = new IndexMap.OfIndex&lt;V1, V2, T&gt;(this.tx, iv);<a name="line.96"></a>
<span class="sourceLineNo">097</span>        if (iv.hasFilters())<a name="line.97"></a>
<span class="sourceLineNo">098</span>            indexMap = indexMap.filterKeys(new IndexKeyFilter(this.tx, iv, 1));<a name="line.98"></a>
<span class="sourceLineNo">099</span><a name="line.99"></a>
<span class="sourceLineNo">100</span>        // Done<a name="line.100"></a>
<span class="sourceLineNo">101</span>        return indexMap;<a name="line.101"></a>
<span class="sourceLineNo">102</span>    }<a name="line.102"></a>
<span class="sourceLineNo">103</span><a name="line.103"></a>
<span class="sourceLineNo">104</span>    @Override<a name="line.104"></a>
<span class="sourceLineNo">105</span>    public CoreIndex&lt;V1, V2&gt; asIndex() {<a name="line.105"></a>
<span class="sourceLineNo">106</span>        return new CoreIndex&lt;V1, V2&gt;(this.tx, this.getIndex2View().asIndexView());<a name="line.106"></a>
<span class="sourceLineNo">107</span>    }<a name="line.107"></a>
<span class="sourceLineNo">108</span>}<a name="line.108"></a>
<span class="sourceLineNo">109</span><a name="line.109"></a>




























































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